[SI-LIST] Re: timing in s-parameters
- From: Scott McMorrow <scott@xxxxxxxxxxxxx>
- To: <ericsilist@xxxxxxxxx>
- Date: Thu, 4 Sep 2014 15:22:23 -0400
Eric
This can be done. We do it all the time. Touchstone.S-parameters contain
magnitude and phase information (Or real/imaginary if you will). From this
the time domain transfer functions are calculated, including delay.
Best regards,
Scott
Scott McMorrow
Teraspeed® Consulting - A Division of Samtec
16 Stormy Brook Rd
Falmouth, ME 04105
(401) 284-1827 Business
http://www.teraspeed.com
On Thu, Sep 4, 2014 at 3:05 PM, eric silist <ericsilist@xxxxxxxxx> wrote:
> I know in a simple way that S-parameters are a frequency domain
> representation of how much of the signal passes through or is reflected.
> Then I have the idea that I could use a tool to extract an S-parameters
> representation of a bus and simulate that in the time domain with h-spice
> or some other tool.
> I don't understand how delay information is derived from the data in a
> s-parameter model? Or is it not and a simulation like I describe above
> will just assume that all channels have the same delay. I thought maybe
> there would be some phase information in the s-parameter model but I didn't
> see that in the touch tone file format.
>
> I'm also curious if I wanted to combine several sparameter models, say a
> package model, channel model, connector model etc. Are there pitfalls
> (like resonant spikes or something) to watch out for if I just hook them
> all up in series? Should I be doing something more complicated to combine
> them?
>
>
> Thank you,
> -Eric
>
>
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